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MSDHandheld for Atomic Transmission Controller Module (TCM) Handheld for TCM to change parameter on your GM and Ford 4-Speed Transmission$357.95Compare
MSDTrans Controller Ford Harness E40D,1995-1997 For use with Ford E40D 1995-1997 transmissions only.$306.95Compare
$306.95Compare
MSDAtomic Transmission Controller, Stand Alone Easily modify the operating parameters of your GM or Ford 4-speed automatic transmission$921.95Compare
MSDTrans Controller Ford Harness AODE/4R70W, 1992 - 1997 For Ford AODE/4R70W, 1992-1997 transmissions only$337.95Compare
MSDTrans Controller Ford Harness E40D, 1989-1994 For use with Ford E40D 1989-1994 transmissions only$306.95Compare
MSDTrans Controller GM Harness 4L60-85E, 93-up (4L70 06-09) For GM 4L60-85E, 93-up (4L70 06-09) transmissions only$280.95Compare- $306.95Compare
MSD4FT Harness Extension, MSD Atomic TCM to Handheld 4FT Harness Extension, MSD Atomic TCM to HandheldPart# 27621In Stock$48.24Compare
MSDTrans Controller Ford Harness AODE/4R70W, 1998-Up For use with Ford AODE/4R70W - 1998-Up Transmissions Only$306.95Compare
Transmission Controller
Take full control of your automatic with MSD’s transmission controllers. Whether you're swapping in a modern 4L60E, 4L80E, or other electronically controlled trans, our controllers offer plug-and-play simplicity with customizable shift points, line pressure, and performance settings—right from the driver's seat.